Malicious PDF — malware analysis report

Static analysis result for SHA-256 e90a25b9c111ed16…

MALICIOUS

PDF

84.6 KB Created: 2021-07-01 18:56:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: c10691ea6ce07d75742144d5fd30dad8 SHA-1: 05b285c06da250bf65606abb7d4aaa422bc7f49c SHA-256: e90a25b9c111ed16ca250c553d1082f9cbabaf7809283cd8a0ceb5858960258c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The embedded URLs, such as the one on cashofferoregon.com, are likely intended to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cashofferoregon.com/wp-content/plugins/formcraft/file-upload/server/content/files/160772de1a3b92---89005545897.pdf
    • https://mygo.com/ckfinder/userfiles/files/8169695039.pdf
    • https://an-professional.ru/img/files/file/29245395549.pdf
    • http://alarcon-v.com/editor_upload_image/file/19980136181.pdf
    • https://markeishahall.com/wp-content/plugins/super-forms/uploads/php/files/c55a6b7d6b1d4ba55dceb266467fe545/viwukaxawasabegibuseke.pdf
    • https://vidolamerica.org/wp-content/plugins/super-forms/uploads/php/files/1f5cb5ffd27e28f1da48ca23e32928cb/jepulixibiludato.pdf
    • http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/160790c972cb59---63669480549.pdf
    • http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160b69fe06f9f1---91969886476.pdf
    • https://leo-translate.com.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607eba5f9f352---dibemiwukesulabol.pdf
    • http://www.itbaloch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b65f64bbbc---tojexupomunopokireji.pdf
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/1609efd2794e1d---zofadu.pdf
    • https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a1df71f29c6---66764687729.pdf
    • http://anhuishangbiao.com/upload_fck/file/2021-5-14/20210514115159306319.pdf
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16087b586be3f0---86737503632.pdf
    • http://megaprestige.ru/uploads/files/tibopilenoxopasexaratazu.pdf
    • https://goldenparadisestsimons.com/wp-content/plugins/super-forms/uploads/php/files/1b885d3c3c455f3fa6474d55300ab6e2/76462922000.pdf
    • http://global-gypsum.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099fae7a7996---mimemopenexavatelininugu.pdf
    • http://theydeserveastamp.org/wp-content/plugins/formcraft/file-upload/server/content/files/160be7e0d99720---joruxokarixubuk.pdf
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/e8e5376fcc7d810b64779638b0e70f53/budejoxobezuwopevide.pdf
    • http://webinaris.net/ckfinder/userfiles/publics/files/fujoxowexovu.pdf
    • http://kubkao-kubpla.com/userfiles/files/38240905343.pdf
    • https://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/ac1197e03fe3206267bea1a8c5007486/13158515057.pdf
    • http://vasamo.org/pds/userfiles/files/zuwaxojegon.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=guide+red+dead+redemption+pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea1e.bin
6ce56c1ece3584b448d77018bcf4c1d23ed9505fe408847afc8da2439d4f9c77		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1E 10584 bytes
font_01_sfnt_off0001023d.bin
ff8bd7408d954c642db010e9b0688c63d946078259d1c7fc4117e32ae3388768		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1023D 16608 bytes
font_02_sfnt_off00012d32.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12D32 16792 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.